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World J Gastrointest Surg. Jul 27, 2025; 17(7): 107385
Published online Jul 27, 2025. doi: 10.4240/wjgs.v17.i7.107385
Table 2 Endoscopic retrograde cholangiopancreatography perforations
Type of perforation
Stapfer (most used)
Howart
Incidence
Type IDuodenal wall perforation (by endoscope)Duodenal perforation remote from papilla18%
Type IIPeriampullary perforation (precut/sphincterotomy)Periampullary retroperitoneal perforation58%
Type IIIBiliary or pancreatic duct perforation (by intraductal instrumentation)Guidewire related perforation13%
Type IVRetroperitoneal gas alone-11%